I am in the process of utilising the rear half of my detached garage for a hobby room. We have a pitched roof, so joists are 600mm centres.
I have read a few previous question/answers…I take it that using the 12.5mm fire resistant board for the ceiling and dividing wall is worth it for a number of reasons.
In terms of the dividing wall, what is the better option for timber? 50 x 75 or 50 x 100?
Also, do I need to have a 'step' in the door way to cover regs?